<template>
  <header class="header">
    <h1>todos</h1>
    <input id="toggle-all" class="toggle-all" type="checkbox" >
    <label for="toggle-all"></label>
    <input
    v-model="neirong"
 @keydown.enter="tianjia"
      class="new-todo"
      placeholder="输入任务名称-回车确认"
      autofocus
    />
  </header>
</template>

<script>
export default {
    props:["list"],
    data() {
        return {
            neirong:"",
        }
    },
 methods:{
     tianjia(){
         if (this.neirong.length==0) {
             return alert('输入内容不能为空');
         }
this.$emit('chuan', this.neirong);
this.neirong=""
     }
 }
}
</script>